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#1 Le 28/03/2026, à 20:55

fred78110

kubuntu ne se connecte plus en wifi

Bonjour,

Mon kubuntu 24.04 n'arrive plus à se connecter au wi-fi.

Merci pour votre aide smile

fred@fred-hplaptop17cn2xxx:~$ lspci -k -nn | grep -A 3 -i net
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8852BE PCIe 802.11ax Wireless Network Controller [10ec:b852]
        Subsystem: Hewlett-Packard Company RTL8852BE PCIe 802.11ax Wireless Network Controller [103c:88e3]
        Kernel driver in use: rtw89_8852be
        Kernel modules: rtw89_8852be
fred@fred-hplaptop17cn2xxx:~$ 
fred@fred-hplaptop17cn2xxx:~$ ip -c a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: wlp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 1c:ce:51:c0:30:36 brd ff:ff:ff:ff:ff:ff
    inet 10.140.6.97/24 brd 10.140.6.255 scope global dynamic noprefixroute wlp2s0
       valid_lft 2173sec preferred_lft 2173sec
    inet6 fe80::cfd6:cc41:605a:108b/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
5: moz0: <POINTOPOINT,NOARP,DEBUG,UP,LOWER_UP> mtu 1420 qdisc noqueue state UNKNOWN group default qlen 1000
    link/none 
    inet 10.133.44.88/32 scope global moz0
       valid_lft forever preferred_lft forever
    inet6 fc00:bbbb:bbbb:bb01:d:0:5:2c58/64 scope global 
       valid_lft forever preferred_lft forever
fred@fred-hplaptop17cn2xxx:~$ 
sudo lshw -class network
fred@fred-hplaptop17cn2xxx:~$ ip -c a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: wlp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 1c:ce:51:c0:30:36 brd ff:ff:ff:ff:ff:ff
    inet 10.140.6.97/24 brd 10.140.6.255 scope global dynamic noprefixroute wlp2s0
       valid_lft 2173sec preferred_lft 2173sec
    inet6 fe80::cfd6:cc41:605a:108b/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
5: moz0: <POINTOPOINT,NOARP,DEBUG,UP,LOWER_UP> mtu 1420 qdisc noqueue state UNKNOWN group default qlen 1000
    link/none 
    inet 10.133.44.88/32 scope global moz0
       valid_lft forever preferred_lft forever
    inet6 fc00:bbbb:bbbb:bb01:d:0:5:2c58/64 scope global 
       valid_lft forever preferred_lft forever
fred@fred-hplaptop17cn2xxx:~$ sudo lshw -class network
[sudo] Mot de passe de fred : 
  *-network                 
       description: Interface réseau sans fil
       produit: RTL8852BE PCIe 802.11ax Wireless Network Controller
       fabricant: Realtek Semiconductor Co., Ltd.
       identifiant matériel: 0
       information bus: pci@0000:02:00.0
       nom logique: wlp2s0
       version: 00
       numéro de série: 1c:ce:51:c0:30:36
       bits: 64 bits
       horloge: 33MHz
       fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration : broadcast=yes driver=rtw89_8852be driverversion=6.8.0-106-generic firmware=N/A ip=10.140.6.97 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       ressources : irq:149 portE/S:3000(taille=256) mémoire:50400000-504fffff
fred@fred-hplaptop17cn2xxx:~$ 
fred@fred-hplaptop17cn2xxx:~$ rfkill list all
1: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
3: hci0: Bluetooth
        Soft blocked: yes
        Hard blocked: no
fred@fred-hplaptop17cn2xxx:~$ 
fred@fred-hplaptop17cn2xxx:~$ iwconfig
lo        no wireless extensions.

wlp2s0    IEEE 802.11  ESSID:"Galaxy A22 5G2016"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: EE:C0:CB:D6:00:5D   
          Bit Rate=72.2 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=70/70  Signal level=-40 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:1  Invalid misc:45   Missed beacon:0

moz0      no wireless extensions.

fred@fred-hplaptop17cn2xxx:~$ 
fred@fred-hplaptop17cn2xxx:~$ nmcli dev wifi | cat
IN-USE  BSSID              SSID               MODE   CHAN  RATE        SIGNAL  BARS  SECURITY  
*       EE:C0:CB:D6:00:5D  Galaxy A22 5G2016  Infra  6     117 Mbit/s  75      ▂▄▆_  WPA2      
        28:9E:FC:D4:1F:F4  --                 Infra  52    540 Mbit/s  72      ▂▄▆_  WPA2      
        DA:78:7F:C7:31:36  --                 Infra  100   540 Mbit/s  70      ▂▄▆_  WPA2 WPA3 
        28:9E:FC:D4:1F:F0  --                 Infra  1     130 Mbit/s  69      ▂▄▆_  WPA2      
        E4:5D:51:B3:B6:EE  SFR_B6E8           Infra  1     130 Mbit/s  67      ▂▄▆_  WPA1 WPA2 
        D8:78:7F:C7:31:31  SFR_312F           Infra  100   540 Mbit/s  67      ▂▄▆_  WPA1 WPA2 
        D8:78:7F:C7:31:30  SFR_312F           Infra  11    130 Mbit/s  65      ▂▄▆_  WPA1 WPA2 
        D8:78:7F:B3:C1:E1  SFR_C1DF           Infra  100   540 Mbit/s  49      ▂▄__  WPA1 WPA2 
        DA:78:7F:B3:C1:E6  --                 Infra  100   540 Mbit/s  49      ▂▄__  WPA2 WPA3 
        18:DF:26:1B:6A:A0  wififou            Infra  1     130 Mbit/s  45      ▂▄__  WPA2      
        D8:78:7F:B3:C1:E0  SFR_C1DF           Infra  11    130 Mbit/s  27      ▂___  WPA1 WPA2 
fred@fred-hplaptop17cn2xxx:~$

Frédéric

Dernière modification par fred78110 (Le 29/03/2026, à 00:44)

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